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<html lang="en">
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      <meta name="description" content=""/>
      <meta name="keywords" content="" />
      <title>EWCRM</title>

      <!-- ========== Css Files ========== -->
      <link href="/css/root.css" rel="stylesheet">
      <style type="text/css">
        body{background: #F5F5F5;}
      </style>
  </head>
  <body>

    <div class="error-pages">

        <img src="/img/500.png" alt="500" class="icon" width="400" height="260">
        <h1>内部服务器错误</h1>
        <h4>服务器出了严重的问题，请稍后再试。</h4>

        <div class="bottom-links">
            <a href="javascript:history.back();" class="btn btn-default">返回上一页</a>
            <a href="/admin/index" class="btn btn-light">点击去主页</a>
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